XTouch, an SDK created by a group at the University of Toronto’s Mobile Applications Lab and funded by JOLT, turns any surface into a touch-sensitive controller for iOS apps with no additional hardware. Since XTouch uses acoustics and vibrations to recognize taps on a surrounding surface, the only requirement is that your iPhone or iPad is placed on the same surface you want to use as a touchpad. An SDK is coming soon that will allow developers to think up many interesting implementations, but for now the company has released two apps that show off what XTouch is capable of. expand full story